Performance evaluation of a fuel-cell based plant producing its own fuel by solar energy

Frangopoulos, ChA; Monanteras, NC

dc.contributor.author	Frangopoulos, ChA	en
dc.contributor.author	Monanteras, NC	en
dc.date.accessioned	2014-03-01T02:48:34Z
dc.date.available	2014-03-01T02:48:34Z
dc.date.issued	1997	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33902
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0031348680&partnerID=40&md5=85846bf7c3092e8c888b59cfe7b2beb3	en
dc.subject.other	Cogeneration plants	en
dc.subject.other	Computer simulation	en
dc.subject.other	Mixed oxide fuels	en
dc.subject.other	Performance	en
dc.subject.other	Solar energy	en
dc.subject.other	Solids	en
dc.subject.other	Solid oxide fuel cells	en
dc.subject.other	Fuel cells	en
dc.title	Performance evaluation of a fuel-cell based plant producing its own fuel by solar energy	en
heal.type	conferenceItem	en
heal.publicationDate	1997	en
heal.abstract	Fuel cells can operate also as appliances for steam electrolysis. Consequently, a system of fuel cells can take advantage of available electricity and certain load conditions (load duration curve) in order to produce its own fuel (hydrogen) using, e.g. sea water, as raw material. A system with solid oxide fuel cells (SOFC) is studied here, due to its high temperature cogeneration capabilities. The fuel cells form arrays that oxidize the fuel flow or electrolyze the water vapour flow in various stages. During the hydrogen production phase, water flow and electric power are essential. Electric power can be produced by renewable sources and friendly to the environment technologies (e.g. photovoltaics). The products (H2, O2, H2O) are kept in tanks. During the second phase, the fuel and the oxidant react electrochemically in the fuel cells producing electric power. At the same time, electric power is produced by a gas turbine which is driven by the gases exiting the fuel cells. A simulation method has been developed and used to study the performance of such a system. For a certain nominal power of the fuel cells, variables characterizing the performance of the system (hydrogen, electricity and heat production, efficiencies, etc.) are determined as they vary throughout the year. The effect of important parameters on the performance of the system is studied and the results are presented on graphs and tables. It is shown that such an environmentally neutral system is technically feasible and can operate with no need of external supply of electricity and fuel.	en
heal.publisher	Int Acad Publ	en
heal.journalName	Proceedings of the International Conference on Thermodynamic Analysis and Improvement of Energy Systems, TAIES'97	en
dc.identifier.spage	573	en
dc.identifier.epage	581	en